Buck Showalter had no idea 'Seinfeld' was popular when he made his appearance on the show

Seinfeld: 15 Behind-The-Scenes Facts And Recent Revelations

The Year the Yankees and Mets Brought Winning Baseball Back to New York

For years, I thought this actually was Calvin Klein. I had no idea it was an actor til recently. : r/seinfeld

How Larry David turned his Yankees pain into 'Seinfeld' gold : r/baseball

What the Buck is he saying? Best of Mets first week of spring training

Damn Yankees!: The Most Memorable Appearances by NY Yankee Players on Seinfeld, News, Scores, Highlights, Stats, and Rumors

TIL Buck Showalter earned his nickname from a minor league manager for walking around the clubhouse buck naked : r/baseball

Seinfeld: 15 Behind-The-Scenes Trivia Tidbits

Buck Showalter on his 'last rodeo' with the O's and Derek Jeter's final home game - The Washington Post